FAQ
Why use the patch program? Why not use a Perl module like Text::Patch?
The patch program has many nice features that Text::Patch lacks, e.g.
applying reverse patch (needed to check fixed state and to undo),
autodetection of patch type, ignoring whitespace and fuzz factor, etc.
KNOWN ISSUES
SEE ALSO
Rinci::Transaction
Text::Patch, PatchReader, Text::Patch::Rred